Coating knowledge: about the construction of acrylic polyurethane paint

Key tips: Construction of acrylic polyurethane paint: 1、 Construction on galvanized substrate: 1 Substrate treatment: first remove the zinc rust on the surface of the substrate with a polishing machine or abrasive cloth, and then wipe the substrate with a cotton cloth dipped in acrylic polyurethane diluent to remove the surface oil stain 2 Primer coating: according to the construction ratio of paint: curing agent: diluent = 100:15:18, evenly spray one coat of zinc yellow epoxy primer (about 8 ㎡ / kg) 3 Finish coating: after the zinc yellow epoxy primer is dried for 24 hours, polish the finish with 600 mesh water sandpaper Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Paint Home News: about the construction of acrylic polyurethane paint: 1 The construction of galvanized substrate: 1 Substrate treatment: first remove the zinc rust on the surface of the substrate with a polishing machine or abrasive cloth, and then wipe the substrate with a cotton cloth dipped in acrylic polyurethane diluent to remove the surface oil stain 2 Primer coating: according to the construction ratio of paint: curing agent: diluent = 100:15:18, evenly spray one coat of zinc yellow epoxy primer (about 8 ㎡ / kg) 3 Finish coating: after the zinc yellow epoxy primer is dried for 24 hours, polish the impurities on the paint film with 600 mesh water sandpaper, and then remove the dust Spray 1-2 times of acrylic polyurethane finish according to the ratio of paint: curing agent: diluent = 4.3:1:1.5, with the interval of 2.5-4 hours The results show that zinc yellow epoxy primer is applied on the galvanized substrate, which has strong adhesion and does not fall off It can be used together with acrylic polyurethane top coat, with good adhesion, no delamination and good decoration effect 2、 The most suitable baking temperature of acrylic polyurethane quick drying paint has been proved by the test The most suitable baking temperature of acrylic polyurethane quick drying paint is: after coating and standing for 0.5-2 hours, put it into the oven type oven with constant temperature of 70 ℃, bake for 1-2 hours and then dry (according to the thickness of the substrate, master the baking time) 3 The matching use of acrylic polyurethane top coat and nitro bottom top coat has been proved by tests: 1 The effect of acrylic polyurethane top coat on nitro primer is better, and the binding force of the bottom is strong 2 The acrylic polyurethane top coat is coated with nitro top coat, without any bad phenomenon, and the affinity between the two is good 3 Acrylic polyurethane topcoat must be hard dry before nitrocellulose topcoat is applied, otherwise there will be undercut and light loss Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,